Access free live classes and tests on the app
Download
+
Unacademy
  • Goals
    • AFCAT
    • AP EAMCET
    • Bank Exam
    • BPSC
    • CA Foundation
    • CAPF
    • CAT
    • CBSE Class 11
    • CBSE Class 12
    • CDS
    • CLAT
    • CSIR UGC
    • GATE
    • IIT JAM
    • JEE
    • Karnataka CET
    • Karnataka PSC
    • Kerala PSC
    • MHT CET
    • MPPSC
    • NDA
    • NEET PG
    • NEET UG
    • NTA UGC
    • Railway Exam
    • SSC
    • TS EAMCET
    • UPSC
    • WBPSC
    • CFA
Login Join for Free
avtar
  • ProfileProfile
  • Settings Settings
  • Refer your friendsRefer your friends
  • Sign outSign out
  • Terms & conditions
  • •
  • Privacy policy
  • About
  • •
  • Careers
  • •
  • Blog

© 2023 Sorting Hat Technologies Pvt Ltd

  • Exams
    • SBI Exams
      • SBI PO
      • SBI Clerk
      • SBI SO
    • IBPS Exams
      • IBPS PO
      • IBPS Clerk
      • IBPS RRB
      • IBPS SO
    • LIC Exams
      • LIC Assistant
      • LIC AAO
      • LIC ADO
    • RBI Exams
      • RBI Grade B
      • RBI Assistant
  • Notifications
    • Upcoming Bank Exam
    • Syllabus
      • IBPS Syllabus
        • IBPS PO Syllabus
        • IBPS Clerk Syllabus
        • IBPS RRB Syllabus
        • IBPS SO Syllabus
      • SBI Syllabus
        • SBI PO Syllabus
        • SBI Clerk Syllabus
      • LIC Syllabus
        • LIC Assistant Syllabus
        • LIC AAO Syllabus
        • LIC ADO Syllabus
      • RBI Syllabus
        • RBI Assistant Syllabus
  • Study Material
    • Magazine Download
    • Bank Exams Notes
  • Tests & Practice
    • Scholarship Test
    • Test Series
    • Learning Festival
  • Rankers Guide
    • Paper Analysis
Bank Exam » Bank Exam Study Materials » Quantitative Aptitude » Boats and Rivers
insurance_banking_exams

Boats and Rivers

"Boats and rivers" refers to an interesting concept that is frequently asked in the section of "quantitative aptitude" in the subject of mathematics.

Table of Content
  •  

In this study, effective exploration has been conducted with respect to the concept of boats and rivers. However, in the study, first and foremost discussion is conducted on the concepts and situations that are assisted with the motion of the boat concerning the river. Furthermore, in the study, several conditions are explored for both upstream and downstream. The formulas are also catered to focusing on the conditions associated with still waters, with that of defining the steams. Discussions have also been made on the types of questions that are concerned with the specific conditions.

Understanding the concepts based on boats and rivers

Delving into the study, it is well acknowledged that the notions that are associated with the boats and streams are frequently asked in several competitive examinations. However, it is noticed that the basic concepts that underlie the concepts associated with boats and streams are majorly relation that is evidenced by the aspects of time taken, speed acknowledged and as well as distance travelled.  It also needs it noted that before entering into the chapter one needs to know the meaning of the terminologies that are associated with boats and streams. The term “upstream” refers to the motion of a swimmer in just the opposite direction of the stream. This is contradictory to the term ”downstream” as it implies the movement of boats along with the flow of the river. Moreover, stream refers to the water that has currently associated with it.

Formulas associated with boats and rivers

Several formulas are there that effectively help in solving the problem associated with the situation that is based on the specific conditions. “u” refers to the speed of the boat and “v” determines the speed of the stream, to that the formulas are as follows.

  • “Upstream” equals (u-v) kilometres per hour
  • “Downstream” equals (u+v) kilometres per hour
  • Speed of stream equals half multiplied by the difference of speed of downstream and upstream
  • In still water, the speed of the boat equals half multiplied by the sum of downstream and upstream

Calculating the speed of the river and the boat

Calculating the speed of the boat as well as the stream is quite easy if one properly understands the concepts associated with it. For example, a boat is moving down in the river with a speed of 28 km in 4 hours time and going up the river, takes 6 hours for 12 km. Determine the speed of the boat and the river. In answering the question, the speed of the boats in stagnant water will be half multiplied by the summation of “upstream and downstream”, which means, [½ (7+2)]= 4.5 km per hour. On the other hand, the speed of the stream is denoted by half multiplied by differences between upstream and downstream, i.e.,  [½ (7-2)]= 2.5 km per hour.

Riverboat problems and solutions

In order to resolve the problem associated with boats and streams, directions, and formulas are to be considered. Moreover, the direction of flow of current also needs to be taken care of. 

Tips that will support in solving the problems of rivers and boats

In order to easily and correctly solve the problem associated with the chapters of stream and boats one needs to follow a few significant tips. The first and foremost notion is to effectively memorize the formulas associated with boats and streams. This is followed by determining the direction of flow and as well focusing on the concepts.

River and boat problems

Several problems are noticed, one such is, an individual row 18 km in a downward motion in 4 hours and returns in 12 hours then the speed of the person with that of the stream is, [½ (4.5-1.5)]= 1.5 km per hour is the speed of stream and 3km per hour as the speed of the man.

Conclusion 

Concluding the study, it is noticed that an in-depth exploration has been conducted catering to the concepts associated with boats and streams. Discussions have also been made on the formulas associated with several conditions such as upstream, downstream and also in still waters. Moreover, the determinations of the speed of the boats are acknowledged based on the distance travelled with that of the directions. In addition to these, several tips are explored that have effectively supported solving the sums associated with the topic of boats and streams. Problems are also discussed with simpler ways to solve the problems by clearing the concepts associated with boat and stream. 

faq

Frequently Asked Questions

Get answers to the most common queries related to the Bank Examination Preparation.

What is meant by the term “upstream” with respect to the chapter “boats and rivers”?

Ans. The term “upstream” is defined as the condition when the boat seems to be flowing in an opposite di...Read full

Define the concept of “zero water”.

Ans. It is said to be treated as “zero water” when there lies no flow of current within the water surfac...Read full

What is the formula for the "speed of the boat” in still waters?

Ans. The formula that denotes the “speed of the boat” in a river with still waters is as follows. One half will ...Read full

What is the meaning denoted by boats and streams?

Ans. Stream is termed as the water that is flowing with a considerable speed and is contradictory to the still water...Read full

Ans. The term “upstream” is defined as the condition when the boat seems to be flowing in an opposite direction to the direction of the water flow in the river. This condition is referred to as the upstream, where the net speed associated with the boat is “upstream speed”.

Ans. It is said to be treated as “zero water” when there lies no flow of current within the water surface of the river. In this condition, the water is considered to be stagnant and the speed expressed by water is “zero”.

Ans. The formula that denotes the “speed of the boat” in a river with still waters is as follows. One half will be multiplied with both the notions of the sum of the speed of downstream with that of upstream, which equals the speed associated with the boat in the “still waters”.

Ans. Stream is termed as the water that is flowing with a considerable speed and is contradictory to the still water where no current flows. This means that the still water is “stagnant” in nature.

Crack Bank Exam with Unacademy

Get subscription and access unlimited live and recorded courses from India’s best educators

  • Structured syllabus
  • Daily live classes
  • Ask doubts
  • Tests & practice
Learn more

Notifications

Get all the important information related to the Bank Exam including the process of application, important calendar dates, eligibility criteria, exam centers etc.

Bank Exam Application Process
IBPS Clerk Notifications
IBPS Clerk Result – Check Prelims Exam Result Link
IBPS PO Notifications
IBPS PO Result
IBPS PO Syllabus 2023 for Prelims and Mains Exam
SBI Clerk Notifications
SBI Clerk Result – SBI Clerk Mains Result 2023 Out
SBI PO Admit Card 2022 – Link(Soon), Steps to Download
SBI PO Notifications 2022 – Check Eligibility, Exam Date, Syllabus, Exam Pattern
SBI PO Result
SBI PO Syllabus 2023, Prelims and Mains Syllabus in Detail
See all

Related articles

Learn more topics related to Quantitative Aptitude
Wrong Series

Wrong Number Series, Wrong Turn Series, Geometry Facts And Formulas Of Wrong Number Series, How do you solve a series of wrong numbers in maths?

Working and Non-working Partners

Working partners are commonly referred to as "working partners" in numerous industries. He is known as the sleeping partner because he is silent or sleeps whereas the other person is awake.

Work and Time

Are you willing to know about the relationship between time and work? If yes, then read more and know about it in detail.

Why Two is not a Prime nor a Composite Number?

This article discusses what is a prime number, a co-prime number and composite number. Aspirants will also learn about the properties of prime numbers and how to analyse prime numbers.

See all
Access more than

12,591+ courses for Bank Exams 

Get subscription

Trending Topics

  • IBPS Clerk Exam Analysis 2022
  • Bank Exam Notifications
  • IBPS-PO Eligibility Criteria
  • IBPS PO Exam Pattern
  • IBPS PO Application Process
  • SBI Clerk Exam Pattern
freeliveclasses_bankexams

Related links

  • Bank Exam Study Materials
  • SBI Clerk Result
  • IBPS PO Syllabus
  • IBPS Clerk Result
  • IBPS PO Salary
  • IBPS Clerk Syllabus
  • IBPS Calendar 2023
  • RBI Grade B Officer
  • RRB PO Exam Pattern
  • RRB Exam Syllabus
  • RRB NTPC Exam Pattern
  • General Awareness for Bank Exams
  • RRB Clerk Exam Date 2023
testseries_bankexams
Download Free English Magazine
Company Logo

Unacademy is India’s largest online learning platform. Download our apps to start learning


Starting your preparation?

Call us and we will answer all your questions about learning on Unacademy

Call +91 8585858585

Company
About usShikshodayaCareers
we're hiring
BlogsPrivacy PolicyTerms and Conditions
Help & support
User GuidelinesSite MapRefund PolicyTakedown PolicyGrievance Redressal
Products
Learner appLearner appEducator appEducator appParent appParent app
Popular goals
IIT JEEUPSCSSCCSIR UGC NETNEET UG
Trending exams
GATECATCANTA UGC NETBank Exams
Study material
UPSC Study MaterialNEET UG Study MaterialCA Foundation Study MaterialJEE Study MaterialSSC Study Material

© 2025 Sorting Hat Technologies Pvt Ltd

Unacademy
  • Goals
    • AFCAT
    • AP EAMCET
    • Bank Exam
    • BPSC
    • CA Foundation
    • CAPF
    • CAT
    • CBSE Class 11
    • CBSE Class 12
    • CDS
    • CLAT
    • CSIR UGC
    • GATE
    • IIT JAM
    • JEE
    • Karnataka CET
    • Karnataka PSC
    • Kerala PSC
    • MHT CET
    • MPPSC
    • NDA
    • NEET PG
    • NEET UG
    • NTA UGC
    • Railway Exam
    • SSC
    • TS EAMCET
    • UPSC
    • WBPSC
    • CFA

Share via

COPY